Exercise device



FIG. 1 is a top, rear perspective view of a first embodiment of an exercise device;

FIG. 2 is a front view of the exercise device of FIG. 1;

FIG. 3 is a rear view of the exercise device of FIG. 1;

FIG. 4 is left side view of the exercise device of FIG. 1;

FIG. 5 is right side view of the exercise device of FIG. 1;

FIG. 6 is top view of the exercise device of FIG. 1; and,

FIG. 7 is bottom view of the exercise device of FIG. 1.

The dashed lines form no part of the claimed design. 

CLAIM The ornamental design for an exercise device, as shown and described. 